Biology
A cell consists of three main components which of________

Plasma membrane,Nucleus,Golgi bodies
Protoplasm ,Nucleus,Plasma membrane
Protoplasm,Nucleoplasm,Cytoplasm
Nucleus,Ribosomes,Plasma membrane

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Biology
Which of the following is true about veins?

Veins have a smaller diameter lumen than arteries
Veins are more muscular than arteries
Veins carry blood away from the heart, while arteries carry blood to the heart
Veins have valves; arteries do not

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